A student is asked to draw a model that shows evaporation of a liquid balls will represent molecules arrows will represent motion longer arrows mean faster motion describe how you would show the spacing and motion of the molecules in the liquid state

The least penetrating form of radiation is

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?